Influence of cooling on imaging quality of EMCCD camera

WU Xing-xing; LIU Jin-guo; ZHOU Huai-de; XU Dong; ZHANG Bo-yan

doi:10.3788/OPE.20152313.0529

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Influence of cooling on imaging quality of EMCCD camera

更新时间：2020-08-13

- Influence of cooling on imaging quality of EMCCD camera
- Optics and Precision Engineering Vol. 23, Issue 10z, Pages: 528-532(2015)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152313.0529
  CLC： V447.3
- Received：05 June 2015，
  
  Revised：25 June 2015，
  
  Published：14 November 2015
- 稿件说明：
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武星星, 刘金国, 周怀得等. 制冷对电子倍增CCD相机成像质量的影响[J]. 光学精密工程, 2015,23(10z): 528-532

WU Xing-xing, LIU Jin-guo, ZHOU Huai-de etc. Influence of cooling on imaging quality of EMCCD camera[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 528-532
武星星, 刘金国, 周怀得等. 制冷对电子倍增CCD相机成像质量的影响[J]. 光学精密工程, 2015,23(10z): 528-532 DOI： 10.3788/OPE.20152313.0529.

WU Xing-xing, LIU Jin-guo, ZHOU Huai-de etc. Influence of cooling on imaging quality of EMCCD camera[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 528-532 DOI： 10.3788/OPE.20152313.0529.

摘要

电子倍增CCD相机的读出噪声降低到1e

以下后

暗电流噪声成为电子倍增CCD相机的主要噪声源。由于制冷可以显著降低电子倍增CCD的暗电流噪声

因而其成为影响电子倍增CCD相机成像质量的重要因素。本文在分析比较不同制冷系统优缺点的基础上

提出了适用于航天应用的电子倍增CCD相机制冷系统。通过构建电子倍增CCD相机的噪声模型

分析了不同制冷效果对电子倍增CCD相机成像质量的影响。分析结果表明

电子倍增CCD相机焦面的温度从30℃降低到-30℃

信噪比从82.90提高到87.16后

可以显著改善电子倍增CCD相机的成像质量。该项研究结果为航天用电子倍增CCD相机的研制提供了重要的设计依据。

Abstract

After the readout noise of an Electron Multiplying Charge Coupled Device(EMCCD) camera is reduced as low as 1 e

the dark current noise becomes a primary noise source of the EMCCD camera. As the cooling can reduce the dark current noise of EMCCD camera remarkably

it has been one of the important factors influencing imaging quality of EMCCD camera. This paper analyzes and compares advantages and disadvantages of different cooling systems in the EMCCD camera

then it proposes a new cooling system for the EMCCD camera which is fitful for space-borne applications. By establishing a noise model of EMCCD camera

the influences of different cooling effects on imaging quality of EMCCD camera were analyzed. Analysis results indicate that Signal to Noise Ratio(SNR) of EMCCD camera is improved from 82.9 to 87.2 as the temperature of focal plane is lowered from 30℃ to-40℃. In addition

imaging quality of EMCCD camera can be improved effectively. The research results provides design references for development of EMCCD cameras used in space sciences.shen.

关键词

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references

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